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TROPICAL STORM WATCH IN EFFECT FOR ANTIGUA & BARBUDA
Monday 18th September 2017

5:00 pm Advisory on Maria

Bulletin
Hurricane Maria Advisory Number  10
NWS National Hurricane Center Miami FL   AL152017
5:00 pm AST Mon Sep 18 2017

Maria becomes an extremely dangerous Category 4 Hurricane. The Eye and the intense inner core is expected to pass near Dominica during the next few hours.


Summary of 5:00 pm AST...2100 UTC...Information
----------------------------------------------
LOCATION...15.1N 60.7W
ABOUT 45 MI...70 KM ESE OF DOMINICA
ABOUT 35 MI...55 KM NE OF MARTINIQUE
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...950 MB...28.06 INCHES


Watches and Warnings - Changes With This Advisory:

A Hurricane Warning has been issued for Puerto Rico, Culebra, and Vieques.

The Meteorological Service of St. Lucia has changed the Hurricane Warning for that island to a Tropical Storm Warning.

The Government of the Dominican Republic has issued a Hurricane Watch from Isla Saona to Puerto Plata, and a Tropical Storm Watch west of Puerto Plata to the northern Dominican Republic-Haiti border.

Summary of Watches and Warnings in Effect

A Hurricane Warning is in effect for:
* Guadeloupe
* Dominica
* St. Kitts, Nevis, and Montserrat
* Martinique
* U.S. Virgin Islands
* British Virgin Islands
* Puerto Rico, Culebra, and Vieques

A Tropical Storm Warning is in effect for:
* Antigua and Barbuda
* Saba and St. Eustatius
* St. Maarten
* Anguilla
* St. Lucia

A Hurricane Watch is in effect for:
* Saba and St. Eustatius
* St. Maarten
* St. Martin and St. Barthelemy
* Anguilla
* Isla Saona to Puerto Plata

A Tropical Storm Watch is in effect for:
* St. Vincent and the Grenadines
* West of Puerto Plata to the northern Dominican Republic-Haiti border

A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. Preparations to protect life and property should be rushed to completion.

A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Hurricane Watch means that hurricane conditions are possible within the watch area.  A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous.

A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.

Interests elsewhere in Hispaniola should monitor the progress of this system.  Additional watches and warnings may be required later tonight or on Tuesday.

For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside the United States, please monitor products issued by your national meteorological service.

Discussion and 48-Hour Outlook

At 5:00 pm AST (2100 UTC), the eye of Hurricane Maria was located by satellite imagery and data from the French radar on Martinique near latitude 15.1 North, longitude 60.7 West.  Maria is moving toward the west-northwest near 9 mph (15 km/h), and this general motion is expected to continue through Wednesday.  On the forecast track, the center of Maria will move near Dominica and the adjacent Leeward Islands during the next few hours, over the extreme northeastern Caribbean Sea the remainder of tonight and Tuesday, and approach Puerto Rico and the Virgin Islands Tuesday night and Wednesday.

Maximum sustained winds have increased to near 130 mph (215 km/h) with higher gusts.  Maria is an extremely dangerous category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale.  Additional strengthening is forecast during the next 24 to 36 hours, and Maria is expected to be an extremely dangerous major hurricane during the next couple of days.

Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 125 miles
(205 km).

The estimated minimum central pressure is 950 mb (28.06 inches).

Hazards Affecting Land
Wind: Hurricane conditions should be spreading across Dominica, Guadeloupe, and Martinique during the next few hours, with tropical storm conditions already occurring over portions of the Leeward Islands.  Hurricane conditions should spread through the remainder of the hurricane warning area tonight through Wednesday.  Hurricane conditions are possible within the hurricane watch area Tuesday through Wednesday, with tropical storm conditions possible tonight.  Tropical storm conditions are possible in the tropical storm watch area in St. Vincent and the Grenadines through tonight, and are possible in the tropical storm watch area in the Dominican Republic on Wednesday.

Storm Surge: A dangerous storm surge accompanied by large and destructive waves will raise water levels by as much as 6 to 9 feet above normal tide levels in the hurricane warning area near where the center of Maria moves across the Leeward Islands and the British Virgin Islands.

The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline.  The water is expected to reach the following heights above ground if the peak surge occurs at the time of high tide...

Puerto Rico and the U.S. Virgin Islands...6 to 9 ft.

The deepest water will occur along the immediate coast near and to the north and east of the landfall location, where the surge will be accompanied by large and destructive waves.  Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances.  For information specific to your area, please see products issued by your local National Weather Service forecast office.

Rainfall: Maria is expected to produce the following rain accumulations through Thursday:

Central and southern Leeward Islands...10 to 15 inches, isolated 20 inches.
U.S. and British Virgin Islands...10 to 15 inches, isolated 20 inches.
Puerto Rico...12 to 18 inches, isolated 25 inches.
Northern Leeward Islands from Barbuda to Anguilla...4 to 8 inches, isolated 10 inches.
Windward Islands and Barbados...2 to 4 inches, isolated 6 inches.
Eastern Dominican Republic...4 to 8 inches, isolated 12 inches.

Rainfall on all of these islands could cause life-threatening flash floods and mudslides.

Surf: Swells generated by Maria are affecting the Lesser Antilles. These swells are likely to cause life-threatening surf and rip current conditions.  Please consult products from your local weather office.

 

Below is the 8:00 am and 2:00 pm Advisory on Maria

2:00 pm Advisory on Maria

Bulletin
Hurricane Maria Intermediate Advisory Number 9A
NWS National Hurricane Center Miami FL   AL152017
200 PM AST Mon Sep 18 2017

Maria Continuing to strengthen. The Eye is expected to move through the Leeward Islands late this afternoon or this evening.

Summary of 2:00 pm AST...1800 UTC...Information
----------------------------------------------
LOCATION...14.9N 60.4W
ABOUT 45 MI...70 KM ENE OF MARTINIQUE
ABOUT 70 MI...115 KM ESE OF DOMINICA
MAXIMUM SUSTAINED WINDS...125 MPH...200 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...956 MB...28.23 INCHES

Watches and Warnings - Changes With This Advisory:

The Government of Barbados has discontinued the Tropical Storm Watch for Barbados.

Summary of Watches and Warnings in Effect:

A Hurricane Warning is in effect for:
* Guadeloupe
* Dominica
* St. Kitts, Nevis, and Montserrat
* Martinique
* St. Lucia
* U.S. Virgin Islands
* British Virgin Islands

A Tropical Storm Warning is in effect for:
* Antigua and Barbuda
* Saba and St. Eustatius
* St. Maarten
* Anguilla

A Hurricane Watch is in effect for:
* Puerto Rico, Vieques, and Culebra
* Saba and St. Eustatius
* St. Maarten
* St. Martin and St. Barthelemy
* Anguilla

A Tropical Storm Watch is in effect for:
* St. Vincent and the Grenadines

A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area.  Preparations to protect life and property should be rushed to completion.

A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area.

A Hurricane Watch means that hurricane conditions are possible within the watch area.  A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous.

A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.

Interests elsewhere in the Lesser Antilles and the Dominican Republic should monitor the progress of this system.  Hurricane Warnings will likely be issued for Puerto Rico and the nearby islands this afternoon.

For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside the United States, please monitor products issued by your national meteorological service.

Discussion and 48-Hour Outlook
At 2:00 pm AST (1800 UTC), the eye of Hurricane Maria was located by the French radar on Martinique near latitude 14.9 North, longitude 60.4 West.  Maria is moving toward the west-northwest near 10 mph (17 km/h), and this motion with some decrease in forward speed is expected through Tuesday night.  On the forecast track, the center of Maria will move across the Leeward Islands late today and tonight, over the extreme northeastern Caribbean Sea Tuesday and Tuesday night, and approach Puerto Rico and the Virgin Islands on Wednesday.

Reports from an Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds have increased to near 125 mph (200 km/h) with higher gusts.  Maria is a Category 3 Hurricane on the Saffir-Simpson Hurricane Wind Scale.  Additional rapid strengthening is forecast during the next 48 hours, and Maria is expected to be a dangerous major hurricane as it moves through the Leeward Islands and the northeastern Caribbean Sea.

Hurricane-force winds extend outward up to 15 miles (30 km) from the center and tropical-storm-force winds extend outward up to 125 miles (205 km).

The minimum central pressure estimated from the Hurricane Hunter aircraft data is 956 mb (28.23 inches).

Hazards Affecting Land

Wind: Hurricane conditions are first expected within portions of the Leeward Islands by late today, with tropical storm conditions beginning shortly.  Hurricane conditions should spread through the remainder of the hurricane warning area tonight through Tuesday night.  Hurricane conditions are possible within the hurricane watch area Tuesday through Wednesday, with tropical storm conditions possible later today or tonight.  Tropical storm conditions are
possible in the tropical storm watch area through tonight.

Storm Surge:  A dangerous storm surge accompanied by large and destructive waves will raise water levels by as much as 6 to 9 feet above normal tide levels in the hurricane warning area near where the center of Maria moves across the Leeward Islands and theBritish Virgin Islands.

The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline.  The water is expected to reach the following heights above ground if the peak surge occurs at the time of high tide...

Puerto Rico and the U.S. Virgin Islands...6 to 9 ft

The deepest water will occur along the immediate coast near and to the north and east of the landfall location, where the surge will be accompanied by large and destructive waves.  Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances.  For information specific to your area, please see products issued by your local National Weather Service forecast office.

Rainfall: Maria is expected to produce total rain accumulations of 6 to 12 inches with isolated maximum amounts of 20 inches across the central and southern Leeward Islands, and the U.S. and British Virgin Islands through Wednesday night. Rainfall amounts of 6 to 12 inches with isolated maximum amounts of 25 inches are expected across Puerto Rico.  Maria is also expected to produce total rain accumulations of 2 to 4 inches with isolated maximum amounts of 8 inches over the remaining northern Leeward Islands from Barbuda to Anguilla, eastern portions of the Dominican Republic, as well as the Windward Islands and Barbados. Rainfall on all of these islands could cause life-threatening flash floods and mudslides.

Surf: Swells generated by Maria are affecting the Lesser Antilles. These swells are likely to cause life-threatening surf and rip current conditions.  Please consult products from your local weather office.

8:00 am Advisory on Maria

Bulletin - September 18th, 2017
Hurricane Maria Intermediate Advisory Number 8A
NWS National Hurricane Center Miami FL  AL152017
8:00 am AST Mon Sep 18 2017

Hurricane Hunter Aircraft Reports Maria Intensifying

Expected to become a major hurricane later today


SUMMARY OF 800 AM AST...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...14.6N 59.7W
ABOUT 85 MI...135 KM E OF MARTINIQUE
ABOUT 120 MI...195 KM ESE OF DOMINICA
MAXIMUM SUSTAINED WINDS...110 MPH...175 KM/H
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...967 MB...28.56 INCHES


Watches and Warnings - Changes With This Advisory:

  • The Government of St. Lucia has issued a Hurricane Warning for St. Lucia.
  • The Meteorological Service of St. Maarten has issued a Tropical Storm Warning for St. Maarten.

Summary of Watches and Warnings in Effect:

A Hurricane Warning is in effect for -

  • Guadeloupe
  • Dominica
  • St. Kitts & Nevis
  • Montserrat
  • Martinique
  • St. Lucia

A Tropical Storm Warning is in effect for -

  • Antigua and Barbuda
  • Saba
  • St. Eustatius
  • St. Maarten

A Hurricane Watch is in effect for:

  • Puerto Rico
  • Vieques
  • Culebra
  • U.S. Virgin Islands
  • British Virgin Islands
  • Saba
  • St. Eustatius
  • St. Maarten
  • St. Martin
  • St. Barthelemy
  • Anguilla

A Tropical Storm Watch is in effect for:

  • Barbados
  • St. Vincent and the Grenadines

A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area.  Preparations to protect life and property should be rushed to completion.

A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area.

A Hurricane Watch means that hurricane conditions are possible within the watch area.  A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous.

A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.

Interests elsewhere in the Lesser Antilles and the Dominican Republic should monitor the progress of this system.

For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside the United States, please monitor products issued by your national meteorological service.


Discussion and 48-Hour Outlook

At 8:00 AM AST (1200 UTC), the center of Hurricane Maria was located near latitude 14.6 North, longitude 59.7 West. Maria is moving toward the west-northwest near 12 mph (19 km/h), and this motion with a decrease in forward speed is expected through Tuesday night. On the forecast track, the center of Maria will move across the Leeward Islands late today and tonight, and then over the extreme northeastern Caribbean Sea Tuesday and Tuesday night.

Reports from an Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds have increased to near 110 mph (175 km/h) with higher gusts.  Maria is currently a Category 2 hurricane on the Saffir-Simpson Hurricane Wind Scale.  Additional rapid strengthening is forecast during the next 48 hours, and Maria is expected to become a dangerous major hurricane before it moves through the Leeward Islands.

Hurricane-force winds extend outward up to 15 miles (30 km) from the center and tropical-storm-force winds extend outward up to 105 miles (165 km).

The minimum central pressure estimated from the Hurricane Hunter aircraft data is 967 mb (28.56 inches).

Hazards Affecting Land

Wind: Hurricane conditions are first expected within portions of the Leeward Islands by late today, with tropical storm conditions beginning during the next several hours.  Hurricane conditions are possible within the hurricane watch area by Tuesday, with tropical storm conditions possible tonight.  Tropical storm conditions are possible in the tropical storm watch area through tonight.

Storm Surge: A dangerous storm surge accompanied by large and destructive waves will raise water levels by as much as 5 to 7 feet above normal tide levels near where the center of Maria moves across the Leeward Islands.

Rainfall: Maria is expected to produce total rain accumulations of 6 to 12 inches with isolated maximum amounts of 20 inches across the central and southern Leeward Islands, including Puerto Rico and the U.S. and British Virgin Islands, through Wednesday night.  Maria is also expected to produce total rain accumulations of 2 to 4 inches with isolated maximum amounts of 8 inches over the remaining northern Leeward Islands from Barbuda to Anguilla, as well as the Windward Islands and Barbados.  Rainfall on all of these islands could cause life-threatening flash floods and mudslides.

Surf: Swells generated by Maria are affecting the Lesser Antilles. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office.


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